. >> president obama and mitt romney will face off in two more debates, the next one is a week from tomorrow in danville, kentucky. president obama may be ahead in the polls in mean swing states, but nationally, the race for president remains extremely tight. the president leads mitt romney by 3% among likely voters. the poll's margin of error is 3.1%. so that puts the race in a virtual tie. the president led his republican rival by five percentage points two weeks ago. he has a much wider lead in you consider registered voters. president obama leads romney by 7% in that category. >>> mitt romney's campaign hoping to get a boost from comments vice president joe biden made yesterday. biden warned supporters in north carolina that romney and his running mate paul ryan would raise taxes on the middle class. >> how they can justify raising taxes on the middle class has been buried the last four years. >> of course the middle class has been buried. they're being bear rayed by regulations, by taxes, by borrowing. they're being buried by the obama administration's economic failures. >> vice preside